commit 07e063e44c2348d23b2d7f249e7da3be56c20760
author Simon Pilgrim <llvm-dev@redking.me.uk> Mon Apr 06 17:15:41 2015 +0000
committer Simon Pilgrim <llvm-dev@redking.me.uk> Mon Apr 06 17:15:41 2015 +0000
tree bb86f2fca4119c5d96ef04ebb6bbb2f41296a723
parent b23c24c2a84bbc367240fc1eaf17863320793200

[DAGCombiner] Add support for FCEIL, FFLOOR and FTRUNC vector constant folding

Differential Revision: http://reviews.llvm.org/D8715

llvm-svn: 234179

llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index e0866ef..71fae7b 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -8194,11 +8194,10 @@
 
 SDValue DAGCombiner::visitFCEIL(SDNode *N) {
   SDValue N0 = N->getOperand(0);
-  ConstantFPSDNode *N0CFP = dyn_cast<ConstantFPSDNode>(N0);
   EVT VT = N->getValueType(0);
 
   // fold (fceil c1) -> fceil(c1)
-  if (N0CFP)
+  if (isConstantFPBuildVectorOrConstantFP(N0))
     return DAG.getNode(ISD::FCEIL, SDLoc(N), VT, N0);
 
   return SDValue();
@@ -8206,11 +8205,10 @@
 
 SDValue DAGCombiner::visitFTRUNC(SDNode *N) {
   SDValue N0 = N->getOperand(0);
-  ConstantFPSDNode *N0CFP = dyn_cast<ConstantFPSDNode>(N0);
   EVT VT = N->getValueType(0);
 
   // fold (ftrunc c1) -> ftrunc(c1)
-  if (N0CFP)
+  if (isConstantFPBuildVectorOrConstantFP(N0))
     return DAG.getNode(ISD::FTRUNC, SDLoc(N), VT, N0);
 
   return SDValue();
@@ -8218,11 +8216,10 @@
 
 SDValue DAGCombiner::visitFFLOOR(SDNode *N) {
   SDValue N0 = N->getOperand(0);
-  ConstantFPSDNode *N0CFP = dyn_cast<ConstantFPSDNode>(N0);
   EVT VT = N->getValueType(0);
 
   // fold (ffloor c1) -> ffloor(c1)
-  if (N0CFP)
+  if (isConstantFPBuildVectorOrConstantFP(N0))
     return DAG.getNode(ISD::FFLOOR, SDLoc(N), VT, N0);
 
   return SDValue();